Every published English tool, organized by the task.

Convert unsigned 8421 BCD digit groups both ways, with a digit chart, decimal-point position, and integer binary comparison.

Look up A–Z number pairs, convert A1Z26 messages both ways, and see possible splits of continuous digits.

Translate text to Morse or decode messy pasted Morse, then copy, play, pause, share, or download the result as WAV audio.

Translate text and binary with strict UTF-8 error positions, a byte-by-byte inspector, exact round-trip checks, and separate batch records.

Use the complete A–Z chart, convert English letters to official NATO code words, or decode them back to text.

Copy uppercase Ω or lowercase ω, get exact HTML and LaTeX codes, and distinguish the legacy Ohm sign.

Copy π, Π, ∏, or ϖ with exact Unicode, HTML and LaTeX codes, then calculate circle circumference and area from a radius.

Search and copy 59 music notes, clefs, rests, accidentals, music emoji and playback symbols, or combine them into one line.

Search and copy outline, filled, decorative, and colored heart symbols for bios, messages, usernames, and posts.

Browse 200+ cute and aesthetic symbols, copy complete layouts, or collect several items into your own symbol line.

Turn English letters into 104 copyable fancy font-style Unicode results, with filters, favorites, and compatibility notes.

Copy √, ∛, or ∜, then build square, cube, fourth, or nth-root expressions as plain text, LaTeX, or HTML.

Copy the degree sign, temperature forms, coordinates, and code formats, with keyboard shortcuts for every common device.

Copy laughing emoji by intensity and context, compare 😂 with 🤣, 😆, and 😅, or paste complete laugh reactions and codes.

Copy crying emoji by feeling and intensity, compare 😭, 😢, 🥲, and 🥹, or paste complete emotional reactions and text faces.

Copy every thumbs up skin tone, compare friendly and sarcastic meanings, or paste complete approval replies and codes.

Choose and copy side eye emoji by meaning, from watching and skepticism to annoyance, playful reactions, meme replies, and text faces.

Search and copy 120+ emoji combos by meaning, mood, color, season, or occasion, or collect emoji to build a custom combination.

Copy ≥ or ≤ and build at-least, at-most, or between expressions as text, LaTeX, or HTML.

Copy 🤓, browse study and gaming combos, or build a text reaction with standard emoji.

Search and copy 43 Unicode hand emoji, reveal skin tones on demand, and inspect exact Unicode, HTML, or JavaScript codes.

Copy and compare six smile emoji, preview one in a short message, and get exact Unicode, HTML, or JavaScript codes.

Copy Δ or δ, distinguish increment ∆ from partial ∂, and build a signed-change expression.

Copy ± or ∓ and build a tolerance expression with lower and upper limits, LaTeX, and HTML.

Copy ×, compare it with x, *, ·, ✕ and ⨯, get code formats, or build a multiplication expression.

Copy 👁️ Eye, 👀 Eyes, or the Eye in Speech Bubble ZWJ sequence and compare their exact Unicode formats.

Create a UPC-A barcode from your own 11- or 12-digit number, calculate or validate its check digit, then download SVG or PNG.

Generate reproducible US name fixtures with no duplicate full names per batch, reserved test emails, CSV/JSON/TSV export, and a UI stress pack.

Encode or decode a Scytale cipher with an adjustable column key, a visual wrap grid, and exact character-position mapping.

Convert one military or AM/PM time, or rewrite a labeled schedule while preserving its structure and marking next-day midnight.

Convert tbsp and tsp with exact fractions, halve or double recipe amounts, and choose US or Australian measuring spoons.

Compare a named US and international ring-size reference, repeat measurements, or cross-check two at-home methods without forcing conflicting readings into one size.

Convert adult head circumference in centimeters or inches to the nearest US fitted, UK, and EU reference, while keeping size boundaries and brand differences visible.

1 US liquid quart equals 4 US cups. Convert either way with fractions and clearly labeled results.

Convert ounces and pounds, paste mixed weights such as 2 lb 4 oz, and copy decimal or pounds-plus-ounces results.

Paste grams, decimal pounds, ounces, or lb + oz, then copy one result or convert up to 100 mixed-unit lines.

Convert grams to kg, paste kg + g together, or process up to 100 mixed-unit lines with spreadsheet-safe CSV.

Convert milliliters and fluid ounces with clearly labeled US or UK standards, unit-aware paste, Swap and Copy.

Convert centimeters to decimal inches or feet and inches, choose precision, and check common height and size values.

Convert millimeters to decimal and fractional inches, including the nearest 1/16, 1/32, or 1/64 inch.

Convert meters to decimal feet or feet and inches for rooms, building dimensions, distances, and heights.

Convert meters to miles or miles to meters, paste values with units, and compare track laps and common race distances.

Convert US cups to liquid gallons or gallons back to cups, paste values with units, and check common container amounts.

Convert kilometers to meters or meters back to kilometers, paste values with units, and check metric steps and powers of ten.

Convert US fluid ounces to tablespoons or back, paste values with units, and avoid mixing liquid volume with weight ounces.

Convert liters to US liquid quarts or back, paste values with units, and compare US liquid, dry, and imperial quart sizes.

Convert centimeters to decimal feet and feet plus inches instantly, with adjustable precision and a common-height chart.

Convert grams to everyday ounces in either direction, including decimal and fraction inputs, copyable results, and clear ounce-type guidance.

Convert millimeters and centimeters in either direction with the exact metric relationship and adjustable decimals.

See how many liters are in a US liquid gallon, then convert gallons and liters in either direction.

Convert milliliters and liters instantly in either direction, then copy the result or check common bottle-size values.

Convert inches and decimal feet in either direction, with a readable feet-and-inches result for every value.

Convert acres and square feet in either direction using the exact 43,560-square-foot acre.

Convert hectares and acres in either direction, then compare the same land area in m², km², sq ft, and sq mi.

Convert feet to miles, see whole miles plus remaining feet, or paste and total up to 100 mixed feet and mile distances.

Convert feet to yards or yards to feet, paste mixed feet-and-inches measurements, and see a breakdown in yards, feet, and inches.

Convert inch fractions, feet plus inches, or multi-part dimensions to calculated meters, centimeters, millimeters, and practical rounded sizes.

Convert meters and yards, paste multiple dimensions, and see decimal yards with a whole-yard, feet, and inches remainder.

Convert millimeters and meters in either direction, paste up to three dimensions, and check every value across the mm, cm, m, and km scale.

Get the 128-US-fluid-ounce answer, convert US or Imperial volume, total mixed units, and allocate a target across different containers.

Convert gallons and quarts in either direction, paste fractions, switch between US liquid and Imperial systems, and see the full volume chain.

Convert cups and pints in either direction, paste fractions, compare three recipe cup sizes, and see the full US liquid volume chain.

Convert US liquid pints to gallons and gallons to pints with exact fractions and decimals. Use 8 pints per gallon, paste units, swap, and copy the result.

Convert pixel width and height to inches and centimeters at any PPI. Compare 72, 96, 150 and 300 PPI print sizes side by side.

Convert knots to mph and km/h, then calculate nautical miles, statute miles, or travel time from the same speed.

Convert KB to MB and compare decimal SI with binary IEC values across bytes, KB, MB, GB, KiB, MiB, and GiB.

Convert minutes to decimal hours and hours plus minutes, or paste up to 100 minute values to total several durations.

Convert Nm to ft lbs or ft lbs to Nm, then compare the exact result with the nearest torque-wrench increment.

Convert steps to miles, feet, and kilometers using a step length, or calibrate the estimate from up to three measured walks.

Convert mcg, mg, g, and kg exactly, or paste up to 100 standalone masses for row-by-row conversion and a total.

Convert Pacific and Eastern times for a selected date with actual PST/PDT and EST/EDT labels, warnings, and batch input.

Convert Central and Eastern times for a selected date with actual CST/CDT and EST/EDT labels, warnings, and batch input.

Convert Pacific and Central times for a selected date with actual PST/PDT and CST/CDT labels, warnings, and batch input.

Convert UTC to EST or EDT for a selected date, with exact abbreviations, calendar rollover, warnings, and up to 50 pasted times.

Convert Mountain and Eastern time by date, choosing Denver MST/MDT or Arizona's fixed MST, with warnings and batch input.

Convert tablespoons and cups with exact fractions, paste full recipe lines, preserve ingredient names, and choose US, metric, or Australian measures.

Convert fluid ounces and quarts as exact fractions, paste recipe lines, and keep US liquid and Imperial units clearly separated.

Convert liters to US or Imperial fluid ounces, then plan 8–64 oz bottles and glasses with exact whole-container differences.

See Hawaii time now, compare mainland U.S. offsets by season, and convert a dated 9 AM–6 PM HST business window to your time zone.

See Phoenix time now, understand Arizona's fixed MST rule, compare mainland offsets by season, and convert a dated 9 AM–6 PM workday.

See Nepal time now with seconds, understand the UTC+5:45 offset, compare your time zone, and convert a dated 9 AM–6 PM daytime window.

See the current time in South Korea with seconds, understand KST at UTC+9, compare your time zone, and convert a dated 9 AM–6 PM call window.

See Kenya time now beside your selected time zone, check the exact date-aware difference, and find shared 9 AM–6 PM hours for calls.

See Nigeria time now beside your selected time zone, check the date-aware difference, and find shared 9 AM–6 PM hours for calls.

See Chicago time now, check CST or CDT for any date, compare your time zone, and find shared 9 AM–6 PM hours for calls.

See Atlanta time now, compare a selected date with your time zone, and find shared 9 AM–6 PM hours for calls.

See Dubai time now beside your selected zone, check the date-aware difference, and find shared 9 AM–6 PM hours for calls.

See Pakistan time now beside your selected zone, check the date-aware difference, and find shared 9 AM–6 PM hours for calls.

See Colorado time now with MST or MDT, compare a selected date with your zone, and find shared 9 AM–6 PM hours for calls.

See the time in mainland Spain and the Canary Islands now, compare a Madrid date with your zone, and find shared hours for calls.

See fixed EDT at UTC−4 beside New York's actual EST or EDT, then convert a selected date and time to your own zone.

Compare fixed CST at UTC−6 with Chicago's actual CST or CDT, choose the North American, China, or Cuba meaning, and convert one dated time.

See India Standard Time now, compare it with your zone, and resolve whether a dated IST label means India, Ireland, or Israel.

See fixed MST at UTC−7, compare Denver's date-aware MST or MDT with Phoenix, and convert one time without mixing the rules.

See Sydney, Brisbane, Adelaide, and Perth now, then convert one dated time across all four rules without losing half-hour offsets.

See Berlin's CET or CEST clock, compare Germany with your zone or four U.S. zones, and convert dated times without guessing daylight-saving gaps or overlaps.

Compare Washington, DC and Washington State time side by side, then convert a dated Eastern or Pacific daytime window to your zone.

See Nashville time now, compare Central and Eastern Tennessee, and convert a dated Nashville or Knoxville daytime window to your zone.

Convert K, °C, and °F together, distinguish actual temperatures from temperature differences, or copy a mixed-unit batch table.

Convert mL and cups across US customary, nutrition-label, metric, and Imperial standards, or paste a labeled recipe list.

Convert centimeters and meters, recognize pasted units, or copy a batch of up to 100 measurements.

Convert Fahrenheit to Celsius or Celsius to Fahrenheit, handle temperature differences correctly, and copy batches.

Convert kg to lbs or lbs to kg instantly. Paste 68 kg or 150 lb, swap without losing your value, and copy the result with units. Exact conversion factor.

Convert km to miles or miles to km instantly. Paste a distance with units, copy the result, and check 5K, 10K, half-marathon and marathon distances.

1 US customary cup = 8 US fluid ounces. Convert cups and fl oz in either direction, enter fractions, and avoid confusing fluid ounces with weight ounces.

Convert kph to mph or mph to kph instantly. Paste km/h or mph, swap direction without losing precision, and copy the result with units.

Convert newtons to pound-force or lbf to N instantly. Paste a force with units, swap direction without losing precision, and copy the result.

Convert yards and miles in either direction, see whole-mile remainder and metric equivalents, or compare 400 m and 440 yd track laps.

Convert mL to grams or grams to mL with ingredient presets, custom density, and package-label calibration.

Convert mcg to mg or mg to mcg exactly, accept three microgram symbols, copy all metric mass units, or total up to 100 label values.

Estimate an exercise-specific one rep max from a 1–10 rep set, compare Epley and Brzycki, and see a clearly labeled percentage load table.

Calculate molarity, solute mass, or final solution volume with explicit units and formula steps.

Add lumber rows, quantities, and prices per board foot, with a separate comparison of billing and measured dimensions.

Estimate rectangular, round, oval, or segmented pool water volume in gallons, liters, and cubic meters.

Convert numbers and Roman numerals both ways, check modern notation, convert dates, or process up to 100 mixed lines.

Calculate Wh from watts and time or volts and amp-hours, then estimate and compare battery runtime with visible assumptions.

Find a midpoint or missing endpoint with your own coordinates, worked formula steps and a matching graph.

Calculate cone volume from radius or diameter and perpendicular height, with exact pi, a decimal answer, cubic units, and substituted steps.

Calculate cylinder volume from radius or diameter and height, see base-area and substituted steps, then check an exact pi or decimal answer.

Calculate mean, sum, count and median, plan the average needed for a target, or combine group averages correctly using each group count.

Calculate weighted and unweighted high school GPA, lock the baseline, and compare up to three grade changes without overwriting it.

Solve one-line percent equations, compare percent change with percentage points, or process up to 100 mixed questions.

Find a date before or after today, count calendar days or weekdays, and copy the date with its calculation details.

Compare up to 50 dates against one baseline or previous milestones, calculate working-day gaps, and batch add or subtract offsets.

See 52 full weeks plus the remaining day or days, decimal weeks, and the separate 52-or-53 ISO week-number answer for any year.

Get the 86,400-second answer, convert any number of days, or split seconds into full days, hours, minutes, and seconds.

Add rectangular room areas, paste feet and inches, and copy square-foot and square-meter totals.

Estimate concrete blocks with opening deductions, actual-versus-nominal CMU sizes, mortar joints, waste, and visible rounding.

Calculate a tip, split the bill to the cent, and copy a USD breakdown. Optional before-tax tipping.

Convert a terminating or repeating decimal into a simplified fraction and mixed number with exact steps.

Simplify or scale a two- or three-term ratio, solve one missing proportion value, or split a total into shares.

Calculate CD interest and maturity value, compare three APYs, or test an exact early-withdrawal penalty and reinvestment break-even.

Find a missing side of a right triangle and see the substituted a² + b² = c² steps, square values, and labeled diagram.

Convert a circle equation between general and standard form, then see the center, radius, coefficients, and substitution steps.

Add, subtract, multiply, or divide mixed numbers with exact improper fractions, reduced answers, and explicit negative-sign parsing.

Compare circular pizza size and price by area, then find low-price combinations that meet a target area within a budget.

Audit alternating IN and OUT records, total completed work, and project clock-out time from an open IN and remaining unpaid break.

Estimate cubic yards and tons for up to three gravel areas, add waste or compaction, and optionally compare bulk and bag pricing.

Estimate deck boards, linear feet, fasteners, and optional cost using actual board width, gap, stock length, waste, and a separate 45-degree allowance.

Calculate a sale price or reverse the discount, then compare a multi-item cart with item discounts, an order coupon, tax, and both coupon orders.

Round an exact decimal by place and compare six methods side by side, including explicit .5 tie and negative-number direction rules.

Calculate a complete two-event probability table by choosing independent, mutually exclusive, or known-intersection mode with legal-bound checks.

Use a full positive and negative standard-normal table, highlight the exact row and column, or reverse a probability to z with adjacent-cell interpolation.

Convert up to 100 decimal, E-notation, or ×10 values exactly, compare significant figures with fixed decimal places, and copy spreadsheet rows.

Calculate one logarithm or up to 100 values for a fixed valid real base, with change-of-base substitutions, display-precision checks, and TSV copy.

Calculate exact integer powers, digit counts and scientific notation, or check the real-number domain of negative bases with rational exponents.

Solve cost, impressions, or CPM from any two values, then audit up to 20 campaigns for true blended CPM and average-CPM bias.

Calculate simple interest by term or exact dates, compare fixed 360/365/366-day denominators, and export a monthly accrual schedule.

Find the principal square root, distinguish x²=n solutions, check your own estimate, and follow exact-comparison bisection intervals.

Convert hex and decimal exactly up to 64 bits, compare signed and unsigned readings, and preview width changes before losing high digits.

Explore the unit circle with exact common-angle coordinates, sin, cos and tan, degree and radian inputs, and copyable values.

Solve a quadratic equation with real or complex roots, substituted working and a graph. Paste an equation or enter its coefficients.

Convert radians and degrees in either direction, enter exact π fractions, and check decimal values, turns, and the coterminal angle position.

Calculate molecular weight and molar mass from a chemical formula, with atom counts, mass percentages, nested groups, hydrates, and clear input errors.

Compare three monthly extra-principal plans or solve the payment needed for a target payoff month on a current fixed-rate mortgage.

Pick a random A–Z letter, vowel, consonant, or custom letter. Exclude letters and see the exact pool on a matching wheel.

Count local calendar sleeps until Christmas morning, decide whether tonight counts, and print a dated bedtime checklist.

Start a 5-minute timer in one tap, add optional 1-minute and 30-second alerts, and restore accurate time after a background tab or reload.

Start a 10-minute countdown in one tap, add optional 5- and 1-minute alerts, and restore accurate time after a background tab or reload.

Start a 15-minute countdown in one tap, add optional checkpoint alerts, and recover accurate time after a background tab or reload.

Start a 20-minute countdown in one tap, add optional halfway, 5-minute, and final-minute alerts, and restore accurate time after a reload.

Flip for heads or tails, use fixed best-of-3 or best-of-5 rounds, and copy the result with your named choices and every toss.

Test five valid rounds using a keyboard, mouse, or touch. Early responses and interrupted rounds do not count toward your result.

Test Left, Right and stereo audio with short low-gain tones, an immediate Stop button, and a controlled 100 Hz–10 kHz sweep.

Measure browser-delivered FPS, median and p95 frame intervals, and delayed callbacks with a short visible-tab test and clear hardware limits.

Paste names and split them into size-balanced random groups by group count or maximum group size, then reshuffle or copy the result.

Generate family-friendly drawing words by category and difficulty, avoid repeats during the session, and run a separate 30, 60, or 90-second timer.

Combine two names into up to 12 couple, friendship, or fandom ship-name ideas using both directions, shared-letter overlaps, and adjustable cuts.

Convert a compatible MP4 to MP3 on your device, with bitrate, sample-rate, channel and trim controls before download.